Multinozzle adjustable attachment



Dec. 27, 1949 F. c. GEIBIG MULTINOZZLE ADJUSTABLE ATTACHMENT Filed March14, 1945 INVENTOR FRANK C. GEIBIG ATTORNEY Patented Dec. 27, 1949MULTINOZZLE ADJUSTABLE ATTACHMENT Frank C. Geibig, Westfield, N. J.,assignor to The Linde Air Products Company, a corporation of Ohio 2Application March 14, 1945, Serial No. 582,715

2 Claims.

This invention relates to oxy-fuel gas blowpipes, and more particularlymulti-nozzle adjustable attachments for blowpipe machines.

In oxy-acetylene cutting it is often desirable to make two parallel cutssimultaneously with a single blowpipe. Special nozzle blocks for thispurpose have been proposed, but they have disadvantages, to Wit, lack ofadjustability and difficulty of manufacture, or where maximumadjustability is attained, special long bent nozzles must be used.

The main objects of this invention are to provide an improved adjustableattachment which overcomes disadvantages of the prior art; is simple andeconomical in its parts; has added adjustments, increasing its scope ofusefulness, is smaller, easier to adjust through a greater range, andstronger and more mechanically rugged than proposals of the prior art.

According to the invention a bi-nozzle adjustable cutting attachment isprovided which is adapted to be connected to a conventional oxy-fuel gascutting blowpipe body in place of a standard nozzle. The attachmentincludes a cross-block and, centrally located therein, a nipple havingone end similar to a standard cutting nozzle for attachment to theblowpipe. The longitudinal axis of the cross-block is disposed at rightangles to that of the nipple, a link is pivoted to each end of thecross-block for adjustment about the longitudinal axis of thecrossblock, and a nozzle block is pivoted to the free end of each linkfor adjustment about an axis which is substantially parallel to that ofthe cross-block.

A standard oxy-fuel gas cutting nozzle is removably connected to eachblock, the longitudinal axis of the cutting nozzles being disposed onopposite sides of the longitudinal axis of the nipple, so that onenozzle may be arranged to act in advance of the other; The several partscontain separate oxygen and fuel gas passages so that such gases are fedto the nozzles from the blowpipe regardless of the adjustment of theattachment, although only one cutting nozzle may be used, if desired. Insuch case, the other nozzle block may be provided with a suitableclosure which prevents any gas leakage from the oxygen and fuel gaspassages of such nozzle block.

I Referring to the drawing:

Fig. 1 is a fragmentary perspective view of a blowpipe cutting machineincluding a bi-nozzle adjustable cutting attachment exemplifying theinvention;

I sponding seats of the nipple, so that the oxygen Fig. 2 is a viewpartly in side elevation and partly in vertical cross-section of theattachment; and

Figs. 3, 4, 5 and 6 are fragmentary perspective views of metal platesshowing several cuts made by the attachment.

Referring to Fig. 1 of the drawing, the binozzle adjustable cuttingattachment A is connected to a machine cutting blowpipe body B which ismounted on a cutting machine M by means including an arm 8 and. abracket Ill. The machine M is adapted to travel on a track T which, inthis case, is disposed on a ferrous metal plate P which is, in turn,supported by a frame F.

The bi-nozzle adjustable cutting attachment A includes a nipple N, across-block C connected to the nipple, links L pivoted to the oppositeends of the cross-block for adjustment about a common axis, and nozzleblocks H pivoted to the free ends of the links for adjustment about axeswhich are substantially parallel to the common axis about which thelinks L are adjustable. The nipple N is adapted to fit a conventionalnozzle socket l2 in the machine cutting blowpipe body B, the nipplebeing removably secured to the blowpipeby a hollow nut to. With thisarrangement the attachment A may be adjusted to any desired positionabout the longitudinal axis of the blowpipe body.

The nipple N contains a central cutting oxy' gen passage l8 andeccentric longitudinally extending fuel gas passages 20. The fuel gasmay be a mixture of oxygen and acetylene or any other suitablecombustible gas. The seating arrangement between the nipple and blowpipeB is such that the oxygen and fuel gas passages 18 and 20 in the nipplecommunicate with corresponding oxygen and fuel gas passages 22 and 24 inthe blowpipe body.

The cross-block C is provided with a central socket 26 into which thelower end portion of the nipple N is threaded, the socket 26 beingprovided with suitable seats engaging correand fuel gas passages I8 and20 of the nipple communicate with corresponding oxygen and fuel gaspassages 23 and 3D in the cross-block C, with out any cross-leakage. Thethreaded part of the nipple N may be united with the cross-block C by asuitable ring of solder 32.

The opposite end portions of the cross-block C are each shaped toprovide a frusto-conical section 34 and a threaded section 36 forreceiving a correspondingly shaped socket in one end of 5 the link L,and a cap 38, respectively. A suitable washer 40 is disposed between thecap 38 and the link L, the arrangement being such that the cap may beadjusted to secure the link L in any desired angular position withrespect to the longitudinal axis of the cross-block C.

Each link L is provided with oxygen and fuel gas passages 42 and 44which are in communication with corresponding passages 28 and 30 of thecross-bar, regardless of the angular position of the link, by virtue ofannular grooves 45 and 48 in the frusto-oonical section 34 of the crossblock C.

The free end 50 of each link is provided with a socket 52 which issuitably shaped to receive the -frusto-conical section 54 of a nozzleblock H, the latter being secured in position by a cap 56 which isthreaded to the end section 58 of the nozzle block H and engages theopposite side of the link, a washer 60 of suitable material beingdisposed between the cap and the link. The nozzle block H is providedwith oxygen and fuel gas passages 62 and 64 in constant communicationwith the corresponding passages 42 and 44 in the link L by way of theannular grooves 66 and S8 in the frusto-conical portion 54 of the nozzleblock H. Thus, each nozzle block H may be adjusted about an axis whichis substantially perpendicular to that of the cross-block C.

Each nozzle block His provided with a socket for the reception of theinlet end of a conventional oxy-acetylene cutting nozzle, 12 which issecured in place by a hollow nut 14. Each oxy-acetylene cutting nozzle12 is provided with a central cutting oxygen passage in communicationwith the oxygen passage 62 of the head, and a series of fuel gaspassages in communication with the fuel gas passage 84 of the head. Withthis arrangement each nozzle 12 may be adjusted to any suitable angularposition with respect to the longitudinal axis'of the nozzle block H bysimply turning the block H in the link L, and tightening the cap 56 tosecure it in adjusted position.

The arrangement is such that the longitudinal axes of the nozzles 12 aredisposed on opposite sides of the longitudinal axis, extended, of thenipple N. Thus, as shown in Fig. 1, one of the nozzles may act inadvance of the other. This is especially desirable when the nozzles areused to cut overlapping kerfs l6 and 18 in the metal plate P, as shownin Fig. 4. When one nozzle slightly precedes the other, the flames andcutting oxygen of the diflerent nozzles do not interfere while thecutting operation is in progress.

Fig. 1 shows the attachment suitably adjusted for cutting the plate P soas to provide a nose 80 and a top bevel 82 on the finished edge of theplate P, leaving scraps 84 and B6. The finished plate is shown in Fig.3. If desired, also, a single top bevel can be out leaving no nose.

Fig. 4 shows a method of cutting the plate so as to finish it, as shownin Fig. 5, to produce a top bevel 88 and a bottom bevel 90 only alongone edge of the plate P. This method leaves scraps 92, 94 and 96.

Fig. 6 shows how the plate P may be out to provide strips or coupons 98and I00. In this case the bi-nozzle attachment Av is adjusted to maketwo parallel straight line cuts I02 and I04. in one pass of the singleblowpipe B. These cuts can'be varied as to their spacing and relativeangularity.

Since the connecting means between the attachment A and the blowpipe Bis the same as that of a nozzle, it is possible to swivel theattachmentA with respect to the blowpipe body as may be desired. One nozzle blockH may be blocked, and the other nozzle can be positioned in a variety ofways, in case only a single out is to be made.

What is claimed is:

1. In a blowpipe constructed and arranged to simultaneously out twokerfs in a metal member, in combination, a single blowpipe nippleattachable to a blowpipe body and having passages for delivering aheating gas and a separate cutting oxygen stream; a cross-blocklaterally connected at its longitudinal center to said nipple and havinglongitudinal passages severally communieating with the passages in saidnipple; a pair of links severally pivotally connected at theircorresponding one ends to the opposite ends of said cross-block andangularly adjustable in planes perpendicular to and about thelongitudinal axis of said cross-block; adjustable clamping meansengaging each end of said cross-block for separately clamping each linkin its selected adjusted position; a pair of cutting nozzle blocksseverally pivotally connected to the free ends of said links andangularly adjustable about axes parallel to the longitudinal axis ofsaid crossblock; adjustable clamping means engaging each nozzle blockfor separately clamping said nozzle blocks in their selected adjustedpositions relatively to the links to which they are severally connected;and a pair of cutting oxygen nozzles severally connected to said nozzleblocks; each link having passages therein severally arranged to deliverheating gas and cutting oxygen from said cross-block to heating gas andcutting oxygen passages in said nozzle blocks and nozzles.

2. An adjustable oxy-fuel gas blowpipecutting attachment comprising, incombination, a nipple having separate oxygen and fuel-gas passages, across-block connected to said nipple, said crossblock having separateoxygen and fuel-gas passages in communication with the correspondingpassages in said nipple, links pivoted to the opposite ends of saidcross-block for rotary adjustment about a common axis extending at rightangles to the longitudinal axis of said nipple, said links havingseparate oxygen and fuel-gas passages communicating with thecorresponding passages in said cross-block, and a nozzle block pivotedto the inner side of the free end of each link for rotary adjustmentabout an axis substantially parallel to said common axis, each nozzleblock having separate oxygen and fuel-gas passages in communication withcorresponding passages in its link.

FRANK C. GEIBIG.

REFERENCES CITED The following references are of record in the GreatBritain Aug. 25, 1937

